RON MISCAVIGE, FATHER OF SCIENTOLOGY LEADER DAVID MISCAVIGE, SPEAKS EXCLUSIVELY TO ABC NEWS' '20/20' ABOUT HIS SON'S UPBRINGING AND ULTIMATE RISE TO LEADER OF THE CHURCH

The Former Scientologist Sits Down with ABC News Anchor Dan Harris to Discuss His Revealing Memoir 'RUTHLESS: Scientology, My Son David Miscavige, and Me'

The Interview will Air on '20/20,' Friday, April 29 at 10:00 p.m. EDT, and Across All ABC News Platforms

Ron Miscavige, father of the Church of Scientology leader David Miscavige, speaks exclusively to ABC News Anchor Dan Harris about his son's journey within Scientology starting when the family joined in 1970, and then his ultimate rise to current leader of the Church. It is a rare look inside Scientology told by someone who lived it for more than 40 years, 27 of them working for the Church's Sea Organization. Ron Miscavige's experience with and ultimate break from Scientology in 2012 is recounted in his new revealing memoir, "RUTHLESS: Scientology, My Son David Miscavige, and Me." The interview will air on "20/20" on FRIDAY, APRIL 29 (10:00 - 11:00 p.m. EDT), on ABC.

"RUTHLESS: Scientology, My Son David Miscavige, and Me" will be published on May 3, 2016 by St. Martin's Press.

"20/20" is anchored by Elizabeth Vargas and David Muir. David Sloan is senior executive producer.